136 lines
4.1 KiB
C#
136 lines
4.1 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2017 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.Primitives;
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using OpenRA.Support;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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public class PluggableInfo : ITraitInfo, UsesInit<PlugsInit>
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{
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[Desc("Footprint cell offset where a plug can be placed.")]
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public readonly CVec Offset = CVec.Zero;
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[FieldLoader.Require]
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[Desc("Conditions to grant for each accepted plug type.",
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"Key is the plug type.",
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"Value is the condition that is granted when the plug is enabled.")]
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public readonly Dictionary<string, string> Conditions = null;
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[Desc("Requirements for accepting a plug type.",
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"Key is the plug type that the requirements applies to.",
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"Value is the condition expression defining the requirements to place the plug.")]
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public readonly Dictionary<string, BooleanExpression> Requirements = new Dictionary<string, BooleanExpression>();
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[GrantedConditionReference]
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public IEnumerable<string> LinterConditions { get { return Conditions.Values; } }
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[ConsumedConditionReference]
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public IEnumerable<string> ConsumedConditions
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{
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get { return Requirements.Values.SelectMany(r => r.Variables).Distinct(); }
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}
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public object Create(ActorInitializer init) { return new Pluggable(init, this); }
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}
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public class Pluggable : IObservesVariables, INotifyCreated
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{
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public readonly PluggableInfo Info;
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readonly string initialPlug;
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ConditionManager conditionManager;
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int conditionToken = ConditionManager.InvalidConditionToken;
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Dictionary<string, bool> plugTypesAvailability = null;
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string active;
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public Pluggable(ActorInitializer init, PluggableInfo info)
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{
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Info = info;
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var plugInit = init.Contains<PlugsInit>() ? init.Get<PlugsInit, Dictionary<CVec, string>>() : new Dictionary<CVec, string>();
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if (plugInit.ContainsKey(Info.Offset))
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initialPlug = plugInit[Info.Offset];
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if (info.Requirements.Count > 0)
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{
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plugTypesAvailability = new Dictionary<string, bool>();
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foreach (var plug in info.Requirements)
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plugTypesAvailability[plug.Key] = true;
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}
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}
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void INotifyCreated.Created(Actor self)
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{
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conditionManager = self.TraitOrDefault<ConditionManager>();
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if (!string.IsNullOrEmpty(initialPlug))
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EnablePlug(self, initialPlug);
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}
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public bool AcceptsPlug(Actor self, string type)
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{
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if (!Info.Conditions.ContainsKey(type))
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return false;
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if (!Info.Requirements.ContainsKey(type))
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return active == null;
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return plugTypesAvailability[type];
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}
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public void EnablePlug(Actor self, string type)
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{
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string condition;
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if (!Info.Conditions.TryGetValue(type, out condition))
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return;
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if (conditionToken != ConditionManager.InvalidConditionToken)
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conditionManager.RevokeCondition(self, conditionToken);
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conditionToken = conditionManager.GrantCondition(self, condition);
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active = type;
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}
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public void DisablePlug(Actor self, string type)
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{
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if (type != active)
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return;
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if (conditionToken != ConditionManager.InvalidConditionToken)
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conditionToken = conditionManager.RevokeCondition(self, conditionToken);
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active = null;
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}
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IEnumerable<VariableObserver> IObservesVariables.GetVariableObservers()
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{
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foreach (var req in Info.Requirements)
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yield return new VariableObserver(
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(self, variables) => plugTypesAvailability[req.Key] = req.Value.Evaluate(variables),
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req.Value.Variables);
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}
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}
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public class PlugsInit : IActorInit<Dictionary<CVec, string>>
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{
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[DictionaryFromYamlKey]
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readonly Dictionary<CVec, string> value = new Dictionary<CVec, string>();
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public PlugsInit() { }
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public PlugsInit(Dictionary<CVec, string> init) { value = init; }
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public Dictionary<CVec, string> Value(World world) { return value; }
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}
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}
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